chore: correct typos in audioutils.cpp

[felixonmars]

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New tag: 5.12.14 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #436

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TAG Bot

New tag: 5.12.15 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #440

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New tag: 5.12.16 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #443

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New tag: 5.12.17 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #448

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New tag: 5.12.18 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #454

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TAG Bot

New tag: 5.12.19 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #458

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New tag: 5.12.20 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #472